Got a friend who's interested in a Golf. Here's the spec of it, it's a 1998 Golf MK4 GTi 20vT with a 147k on the shell. The engine has since been replaced with a 90k engine, new clutch, gearbox and exhaust. It has an MOT until Sept 2011 and the TAX ran out last October. The bodywork is very tidy and all straight. The only thing I could see was that it needed a new tyre. Had Recaro's inside, and the interior looked very tidy apart from the steering wheel that had seen better days. What should I be looking at and what should I be skeptical about due to in being quite a high mileage car. Also, what do you think it's worth?